class SpaceShip extends CollidableSprite {
  bool isEnemy;
  int speedX;
  int speedY;
  bool destroyed = false;
  static ImageElement explosionFrames;
  
  SpaceShip(Object animSpec): super(animSpec) 
  {
  }
  
  static get explosionImage()
  {
    if(explosionFrames == null)
    {
      explosionFrames = new Element.tag('img');
      
    }
  }
}

